Air control for floor furnaces



April 16, 1935. R. G. LOGUE 1,997,734

- AIR CONTROL FOR FLOOR FURNACES 4 Filed Oct. 28, 1933 INVENTOR.

ATTORNEY.

Patented Apr. 16, 1935 1 '1 I "UN'l-TEDI STATES PATENT OFFICE AIRICONTROL' FOR FLOOR FURNACES Raymond G. Logue, Los Angeles, Calif.,assignor to Ward Heater 00., Ltd., Los Angeles, Calif.

Application October 28, 1933, Serial No. 695,617

3 Claims. (01. 126-416) invention relates to the air controls for at l0,and an inclined portion 9' at its upper end, floor furnaces'and it hasamong its salient obforming a triangular top portion, having the jectsto provide in combination with a floor furopposite sides II, with outletopenings i2 therenace, suspended from the floor and under a posiin forthe escape of heated air at the sides of .5 'tion adjacent a wall abovesaid floor, an imthe top, as seen in Fig. 3. Said triangular top provedregister construction and arrangement, portion forms a frame, as at [3,to receive a rewhereby the heated air coming from the furnace movableregister door I4, shown in place in Figs. up into the room willfflowfreely through an inl and 3. Said register door 14 has the angularlyclined or angularly disposed register, while cold disposed strips orbaflles l5, as seen in section 10 air from the room can pass downthrough a Fig. 1. At its lower edge, said door 14 is provided 10horizontal portion of said register and through with two bent toes as16, which are inserted a separate down passageway and around under intotwo corresponding openings, ll, in the the lower part of the furnacebody and up frame H3. The top of said register door M is held throughthe heating chamber of the furnace and in place by any suitable latchmeans, as indi- 5 into the room; to provide in combination therecated at18, which can be released and turned to 15 'withT means forsimultaneouslyv regulating the permit the top edge of said door to bemoved outadmission of fresh air from the outside of the wardly, forlifting it out of place when desired building'with theturningon of thefull fuel supfor any particular reason. A horizontal partof ply, wherebynot only the colder air from the the floor register is designated l9,Figs. 1-3. 30 room will be circulated'down and up through the ,Mountedwithin the inner heating shell 9, is furnace body, but additional freshair can be ada fire box or combustion chamber, designated as mitted t0thefurliacefheated and d ted 11pa whole 2i), of rectangular form inhorizontal wardly into theroom; to pro'vide means whereby cross section,under one end of which is placed th s supp 't th burnervcan be partiallythe gas burner 21, with pipe connections 22, and turned on and theburner operated for heating the valve 23, suspended by means of straps,as at 24. cold air from the room to be heated, or from the The lower endof said fire box is open n j p nd r hebuil n wi h u p n tends throughthe bottom 1 of the outer-case t, as

controlmeans' forthe admission of air from the seen in Fig, 1. Ou a d wy the ur Opening mOVe- The valve 23, which controls the supply of gas mn f d s pply'will also p r to p n to the burner 2|, is manipulated fromthe floor 30 theinlet for air from the outside, thus making for register19, by means of a rod 25, adapted to have r e effi i n y and the s pp yf f heated an operating key 26 applied thereto, through the air to theroom above. openings of the horizontal portion H), of the floor In orderto further explain ,my invention, I register, asindicated. haveillustrated one practical embodiment there- A damper or outside aircontrol door 27 is shown 35 of On the acc pa y Sheet gS, which openinginto the cases 6 and 9, and is adapted I will now describe. to be openedinwardly to the light broken line po- Fi u 1 is a v a sectional vi w thu h a sition, by means of a link 25, connected with an fiOOI' furnace eb y y invention; arm 29, connected with the valve operating rod 40Figure 2 is a cross sectional view taken on the 25, whereby the turningof said rod operates to 40 line 2 of Fig. a d, move said arm and'link toopen said door or Figure 3 is a fragmentary, perspective view 0 damper21. The link 28 is connected with the the floor register. I damper 2'!by means of a slot and pin connection,

, Referring now in detail to the drawing, 4 as at 21, whereby the valvecan be partially designates a floor and 5 a wall structure above openedbefore the damper 2! is opened, but when 45 the floor, and which are ofthe usual constructhe valve is fully open, the damper 2'! is also openstion and arrangement. As the heat and products of combustion rise Thefloor furnace here shown consists of an from the burner 21 in thecombustion chamber outer sheet metal box or case, designated 6, with 26,they move upwardly until they strike an overa bottom wall 1, anddesigned to be suspended hanging ledge or baflie member 3%, of apartition 50 under the floor 4, as at 8, 8, whereby the entire or wallmember 3|, dividing said combustion assembled floor furnace can be letdown through chamber, said heat and products of combustion the openingthrough the floor and wall, where being deflected upwardly around saidbafiie memdesired. An inner heating shell 9, is shown withber 30, andthence downwardly and outwardly in the outer box 6, and has an openlower end around another horizontal baflle member 32, and 55 thence outthrough a suitable flue 33, whereby the circulation of said heat and hotproducts of combustion heat the walls of said body 2|, which, in turn,heat the air passing upwardly around the outside of said fire box orcombustion chamber, designated as a whole 20.

At the opposite sides of said fire box 20, within the air heating shell8, are two wall or partition members, as 34, 34, dividing said airheating chamber into two chambers or passageways, designated 9 and 8*.By this arrangement the cool air from the room above will flowdownwardly through the horizontal portion IQ of the fioor register, andupwardly through the chamber or passageway 9*, while the outside airadmitted through the damper or door 21, will move upwardly through theheating passageway 9 and thence up through the grate or members I5 andinto the room.

The usual pilot light or burner 35 is shown adjacent the main burner 2|and said pilot burner is connected with a valve 35, operable by means ofa rod 31, similar to the operating rod 25, to the valve 23, controllingthe fuel supply to the main burnerjsaid valves 23 and 36 connecting to acommon head 38. to which is connected the main fuel supply pipe 39. V 1

Thus I have provided a simple, compact and novel floor furnaceconstruction, positioned closer to the wall than floor registers areusually placed and so arranged that the heated air is dischargedthroughan inclined register structure, while the cool air from a roomflows down through a horizontal register in the floor, with means forcontrolling the inflow of outside air in connection with the control ofthc main fuel supply, and while many changes in the details ofconstruction and arrangement can be made in the show,- ing made. I donot limit myself to the showing. except as I may be limited by thehereto appended claims.

I claim:

1. In combination with a floor and a wall thereupon, a furnace bodysuspended under said floor at said wall, said body having an outer casewith bottom wall, an inner heating shell, open at its lower end, aheating box within said inner heating shell and extending through saidbottom wall of said outer case and open at its lower end and closed atits upper end, a burner in the open lower end of said heating box, ahorizontal floor grate over the upper end of the space between the innerheating shell and said outer case for the down flow of cool air in saidouter case to the open lower end of, said inner heating shell, a grateangularly disposed between said fiocr and said wall, above said floorand over the open upper end of said inner heating shell for the up-flowof heated air from said inner heating shell, and a valve and valve rodbelow said bottom wall of said outer case, said rod extending up throughsaid outer case to said floor grate, whereby said valve can bemanipulated from above said floor and said valve and burner areaccessible below said furnace body.

2. In combination with a floor and a wall thereupon, a furnace bodysuspended under said floor at said wall, said body having an outer casewith bottom wall, an inner heating shell, open at both ends, a heatingbox within said inner shell and extending down through said bottom wallof said outer case, said heating box being closed at itsupper end andopen at its lower end and having baille means therein for deflecting anddirecting the heat and products of combustion therein, a. burner in theopen lower end of said heating box, pipe and valve means for controllingthe fiow of fuel to said burner, said valve and burner being accessiblebelow said furnace body, a horizontal floor grate over the upper end ofthe space between the inner heating shell and said outer case for thedown flow. or cool air in said outer case to the open lower end or saidinner heating shell, a grate angularly disposed between said floor andsaid wall and over the open upper end of said inner heating shell forthe upfiow of heated air from said inner heating shell through saidangularly disposed grate, and an operating rod from the floor to saidvalve for controlling the same.

3. In combination with a. floor and a wall thereupon, a furnace bodysupported under said floor atv said wall, said body having an outer casewith bottom wall closing its bottom, an inner heating shell, open atboth ends, a heating box within. said inner shell, said inner heatingshell, having partition members therein at opposite sides of saidheating box and forming two up-flow passageways in said inner heatingshell, said heating box being open at its lower end through said bottomwall and closed at'its upper end, a burner in the open lower end of saidheating box, pipe. and valve means for said burner, below saidbottomwall, a horizontal floor grate above the space between said innerheating shell and saidouter case, an angularly disposed grate betweensaid floor and said wall and over the upper end of saidinner heatingshell, whereby cool air flows down through said floor grate to and upthrough the inner heating shell and I RAYMOND G. LOGUE.

